Find the domain and range of the function f(x) = 3x^2 - 5.Also find f(-3) and the numbers which are associated with the number 43 in the range. Share with your friends Share 8 Devesh Kumar answered this We have to find domain & range of function fx=3x2-5There is no restriction for the 'x' values .so, domain is R all real no.s& Range is -5,∞ Answeras minimum value of 3x2 can be 0.so,3x2-5=-5 Now, f-3=3-32-5 =3×9-5 =27-5=22 Therefore, f-3=22 Answeralso, fx=43=3x2-5⇒3x2=48⇒x2=16⇒x=±4 Answer 14 View Full Answer